42513747549 has 48 divisors (see below), whose sum is σ = 71095747968. Its totient is φ = 22398380928.

The previous prime is 42513747517. The next prime is 42513747569. The reversal of 42513747549 is 94574731524.

It is a happy number.

It is not a de Polignac number, because 42513747549 - 2⁵ = 42513747517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42513747569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1663264 + ... + 1688630.

It is an arithmetic number, because the mean of its divisors is an integer number (1481161416).

Almost surely, 2^42513747549 is an apocalyptic number.

42513747549 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

42513747549 is a deficient number, since it is larger than the sum of its proper divisors (28582000419).

42513747549 is a wasteful number, since it uses less digits than its factorization.

42513747549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26274 (or 26267 counting only the distinct ones).

The product of its digits is 4233600, while the sum is 51.

The spelling of 42513747549 in words is "forty-two billion, five hundred thirteen million, seven hundred forty-seven thousand, five hundred forty-nine".